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Experience the firm comfort of the King River™ Luxury Firm innerspring mattress by Simmons Beautyrest! This 2000 density coil unit with Pocketed Coil® design offers unique ventilated AirCool® BeautyEdge® foam encasement with Quantumlock® edge support working in tandem to provide conforming back support. With upholstery design featuring TruTemp™ Gel and the Mattress Warehouse exclusive BeautyCool® Gel lumbar support, it’s always about support and comfortable sleeping temperatures with the King River™. Combine with a Simmons Beautyrest foundation for the ultimate in support for your new mattress purchase!